Loss of reviewing points

I'm back! Jeez, I've posted more stuff in the forum in the last few days than I did in six years at the old site. Okay, something I noticed today - twice. I'm reviewing a chapter, then leave that page for whatever and come back to finish. Now I'm told I won't receive any points for the review because I ALREADY REVIEWED IT! What's with that? Okay, I don't really need the points, but what if a "War and Peace" -like posting is in my future? Can never have enough points!